heuristic power
1.Efficient task scheduling is essential issue in heterogeneous <>Grid environment.The problem has been proved to be NP-complete.A heuristic algorithm called HTSCC based on communication and computing cost has been presented.The algorithm considers different computing power,size of task and network bandwidth.Compared with the related work,the result shows that performance of the algorithm HTSCC significantly surpasses the previous approaches in heterogeneous environment. 
2.In this paper,some problems which affect practical applications of the BCU method are investigated. Based on a large number of tests for some power systems,the discrepancy found between the results from BCU method and those from time domain simulation generally can be eliminated or identified by some heuristic methods. A heuristic remedial logic is developed and is added to the BCU method.
